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Hello World in Python and Java
Problem statement: Write a program that prints out the ”Hello World!” message to the screen/console.
Python solution: hello world.py
1 print("Hello
2
World!")
Java solution: HelloWorld.java
1 public class HelloWorld{
2
public static void main ( String [] args
3
System.out.print("Hello World!\n ");
4
}
5}
) {
Questions:
1. What is the first thing that you notice about the two programs?
4. Take a look at the style used in the names of files that store both programs: hello world.py and HelloWorld.java. What do
you notice?
2. What statements are used to print text to the screen/console?
5. Take a look at the name of the Java file and the word that appears on
line number 1 after public class. What do you notice?
3. Notice the semicolon (;) at the end of the line 3 in the Java program.
Why is it there?